WO2010006623A2 - Matériau semi-conducteur et son application comme matériau absorbant pour des cellules solaires - Google Patents
Matériau semi-conducteur et son application comme matériau absorbant pour des cellules solaires Download PDFInfo
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- WO2010006623A2 WO2010006623A2 PCT/EE2009/000011 EE2009000011W WO2010006623A2 WO 2010006623 A2 WO2010006623 A2 WO 2010006623A2 EE 2009000011 W EE2009000011 W EE 2009000011W WO 2010006623 A2 WO2010006623 A2 WO 2010006623A2
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- semiconductor material
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- 239000000463 material Substances 0.000 title claims abstract description 87
- 239000004065 semiconductor Substances 0.000 title claims abstract description 62
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 17
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 230000000737 periodic effect Effects 0.000 claims abstract description 12
- 150000002739 metals Chemical class 0.000 claims abstract description 11
- 229910052755 nonmetal Inorganic materials 0.000 claims abstract description 7
- 150000002843 nonmetals Chemical class 0.000 claims abstract description 7
- 229910052802 copper Inorganic materials 0.000 claims abstract description 5
- 229910052737 gold Inorganic materials 0.000 claims abstract description 5
- 229910052709 silver Inorganic materials 0.000 claims abstract description 5
- 150000004770 chalcogenides Chemical class 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 47
- 239000010949 copper Substances 0.000 claims description 10
- 239000000203 mixture Substances 0.000 claims description 8
- 150000001875 compounds Chemical class 0.000 claims description 6
- 239000000155 melt Substances 0.000 claims description 6
- 229920000642 polymer Polymers 0.000 claims description 6
- 239000010409 thin film Substances 0.000 claims description 6
- 239000002243 precursor Substances 0.000 claims description 5
- 239000010931 gold Substances 0.000 claims description 4
- 239000011261 inert gas Substances 0.000 claims description 4
- 239000000843 powder Substances 0.000 claims description 4
- 229910052723 transition metal Inorganic materials 0.000 claims description 4
- 150000003624 transition metals Chemical class 0.000 claims description 4
- 238000001953 recrystallisation Methods 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 2
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 2
- 229920001609 Poly(3,4-ethylenedioxythiophene) Polymers 0.000 claims description 2
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004411 aluminium Substances 0.000 claims description 2
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- UHYPYGJEEGLRJD-UHFFFAOYSA-N cadmium(2+);selenium(2-) Chemical compound [Se-2].[Cd+2] UHYPYGJEEGLRJD-UHFFFAOYSA-N 0.000 claims description 2
- 239000004020 conductor Substances 0.000 claims description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims description 2
- 239000011733 molybdenum Substances 0.000 claims description 2
- 239000002071 nanotube Substances 0.000 claims description 2
- SBIBMFFZSBJNJF-UHFFFAOYSA-N selenium;zinc Chemical compound [Se]=[Zn] SBIBMFFZSBJNJF-UHFFFAOYSA-N 0.000 claims description 2
- 239000004332 silver Substances 0.000 claims description 2
- 239000013078 crystal Substances 0.000 claims 2
- 238000010438 heat treatment Methods 0.000 claims 1
- 229910010272 inorganic material Inorganic materials 0.000 claims 1
- 239000011147 inorganic material Substances 0.000 claims 1
- 239000011368 organic material Substances 0.000 claims 1
- 229910052714 tellurium Inorganic materials 0.000 abstract description 8
- 229910052710 silicon Inorganic materials 0.000 abstract description 5
- 229910052793 cadmium Inorganic materials 0.000 abstract description 3
- 229910052799 carbon Inorganic materials 0.000 abstract description 3
- 229910052732 germanium Inorganic materials 0.000 abstract description 3
- 229910052745 lead Inorganic materials 0.000 abstract description 3
- 229910052711 selenium Inorganic materials 0.000 abstract description 3
- 229910052717 sulfur Inorganic materials 0.000 abstract description 3
- 229910052718 tin Inorganic materials 0.000 abstract description 3
- 229910052725 zinc Inorganic materials 0.000 abstract description 3
- 239000010410 layer Substances 0.000 description 12
- 229910052738 indium Inorganic materials 0.000 description 5
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 5
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 description 5
- 230000005684 electric field Effects 0.000 description 4
- 239000002800 charge carrier Substances 0.000 description 3
- NLKNQRATVPKPDG-UHFFFAOYSA-M potassium iodide Chemical compound [K+].[I-] NLKNQRATVPKPDG-UHFFFAOYSA-M 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 229910052753 mercury Inorganic materials 0.000 description 2
- 238000005240 physical vapour deposition Methods 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000010944 silver (metal) Substances 0.000 description 2
- 229910004613 CdTe Inorganic materials 0.000 description 1
- 238000002441 X-ray diffraction Methods 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 230000004888 barrier function Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- RKTYLMNFRDHKIL-UHFFFAOYSA-N copper;5,10,15,20-tetraphenylporphyrin-22,24-diide Chemical compound [Cu+2].C1=CC(C(=C2C=CC([N-]2)=C(C=2C=CC=CC=2)C=2C=CC(N=2)=C(C=2C=CC=CC=2)C2=CC=C3[N-]2)C=2C=CC=CC=2)=NC1=C3C1=CC=CC=C1 RKTYLMNFRDHKIL-UHFFFAOYSA-N 0.000 description 1
- KYRUBSWVBPYWEF-UHFFFAOYSA-N copper;iron;sulfane;tin Chemical compound S.S.S.S.[Fe].[Cu].[Cu].[Sn] KYRUBSWVBPYWEF-UHFFFAOYSA-N 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 239000003989 dielectric material Substances 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 229910052756 noble gas Inorganic materials 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 231100000289 photo-effect Toxicity 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000002356 single layer Substances 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 238000004544 sputter deposition Methods 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
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- H01L21/00—Processes or apparatus adapted for the manufacture or treatment of semiconductor or solid state devices or of parts thereof
- H01L21/02—Manufacture or treatment of semiconductor devices or of parts thereof
- H01L21/02104—Forming layers
- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02551—Group 12/16 materials
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- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B11/00—Single-crystal growth by normal freezing or freezing under temperature gradient, e.g. Bridgman-Stockbarger method
-
- C—CHEMISTRY; METALLURGY
- C30—CRYSTAL GROWTH
- C30B—SINGLE-CRYSTAL GROWTH; UNIDIRECTIONAL SOLIDIFICATION OF EUTECTIC MATERIAL OR UNIDIRECTIONAL DEMIXING OF EUTECTOID MATERIAL; REFINING BY ZONE-MELTING OF MATERIAL; PRODUCTION OF A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; SINGLE CRYSTALS OR HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; AFTER-TREATMENT OF SINGLE CRYSTALS OR A HOMOGENEOUS POLYCRYSTALLINE MATERIAL WITH DEFINED STRUCTURE; APPARATUS THEREFOR
- C30B29/00—Single crystals or homogeneous polycrystalline material with defined structure characterised by the material or by their shape
- C30B29/10—Inorganic compounds or compositions
- C30B29/46—Sulfur-, selenium- or tellurium-containing compounds
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
- H01L21/02518—Deposited layers
- H01L21/02521—Materials
- H01L21/02568—Chalcogenide semiconducting materials not being oxides, e.g. ternary compounds
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- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
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- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/032—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312
- H01L31/0326—Inorganic materials including, apart from doping materials or other impurities, only compounds not provided for in groups H01L31/0272 - H01L31/0312 comprising AIBIICIVDVI kesterite compounds, e.g. Cu2ZnSnSe4, Cu2ZnSnS4
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- H01L31/072—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices characterised by at least one potential-jump barrier or surface barrier the potential barriers being only of the PN heterojunction type
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- H01L21/02365—Forming inorganic semiconducting materials on a substrate
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- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
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- H01L31/0248—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies
- H01L31/0256—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by their semiconductor bodies characterised by the material
- H01L31/0264—Inorganic materials
- H01L31/0328—Inorganic materials including, apart from doping materials or other impurities, semiconductor materials provided for in two or more of groups H01L31/0272 - H01L31/032
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- H01L31/18—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof
- H01L31/1828—Processes or apparatus specially adapted for the manufacture or treatment of these devices or of parts thereof the active layers comprising only AIIBVI compounds, e.g. CdS, ZnS, CdTe
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- H10K30/10—Organic devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation comprising heterojunctions between organic semiconductors and inorganic semiconductors
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- H10K85/10—Organic polymers or oligomers
- H10K85/111—Organic polymers or oligomers comprising aromatic, heteroaromatic, or aryl chains, e.g. polyaniline, polyphenylene or polyphenylene vinylene
- H10K85/113—Heteroaromatic compounds comprising sulfur or selene, e.g. polythiophene
- H10K85/1135—Polyethylene dioxythiophene [PEDOT]; Derivatives thereof
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
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- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/549—Organic PV cells
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/50—Manufacturing or production processes characterised by the final manufactured product
Definitions
- the present invention concerns a semiconductor material as well as solar cells, which include this semiconductor material as an absorber material.
- Solar cells from semiconductor materials are basically designed like large area photo diodes. They are not used as radiation detectors, but as a current source, in this case.
- semiconductors generate free charge carriers (electrons and holes) caused by the absorption of energy (electromagnetic radiation).
- energy electrospray radiation
- an internal electric field is required in order to guide the' generated charge carriers in different directions.
- This internal electric field is in most cases created by a p-n junction. Since the light intensity is usually exponentially decreasing inside materials, this junction must be located as near as possible to the surface, and the transitional zone in connection with the electric field should reach as far as possible into the material. This transitional zone (space charge layer) is set up by targeted material doping. In order to create the desired profile, a thin surface layer is usually heavily n-doped, and the thick layer underneath is slightly p-doped. This causes a space charge layer.
- photovoltaic current can either directly be used by a consumer, intermediately stored in a rechargeable battery, or supplied into the power grid by using a grid controlled power inverter.
- the electric voltage with maximum power is usually at approx. 0.5 V for the most common cells.
- the semiconductor materials used generally include silicon (Si), indium (In, for instance in form of CuInSe 2 , CIS, or Cu(In x Ga 1 - X)Se 2 , CIGS), as well as tellurium (in form of CdTe).
- Si silicon
- In indium
- In for instance in form of CuInSe 2 , CIS, or Cu(In x Ga 1 - X)Se 2 , CIGS
- tellurium in form of CdTe.
- Silicon is a bad light absorber and must be manufactured with utmost purity levels, which makes this material expensive and requires a lot of energy for its production.
- the worldwide consumption with indium approximately 850 tons and with tellurium approximately 135 tons
- costs for purchasing of corresponding indium and tellurium sources are very high.
- the materials which we know from the state of the art in technology as absorber media for solar cells, have the disadvantage of being basically manufactured by sputtering techniques or physical vapour deposition (PVD), and therefore usually have an inhomogeneous structure, especially with larger areas.
- PVD physical vapour deposition
- the first task of the present invention is dealing with the challenge of providing an absorber material for solar cells, which generally does not require the use of cost intensive primary materials in manufacture. Additionally, the current invention' is dealing with the task of providing an absorber material for solar cells, the primary or raw materials for which are preferably available in sufficient quantities.
- the current invention is dealing with the task of providing an absorber material for solar cells, which preferably has a more homogeneous structure than the semiconductor materials known from the state of the art in technology.
- Another task of the present invention is to provide a solar cell, which includes the desired semiconductor material as an absorber material.
- Mel , Me2, and Me4 are selected from the group of metals including the group of transition metals, C l and C2 are nonmetals, and where x in the general formula (I) stands for a numeric value of 0 to 1 and y for a numeric value of 0 to 1.
- the semiconductor material mentioned above is suitable as an absorber material in solar cells.
- the primary materials used for manufacturing the semiconductor material according to the present invention are available in sufficient quantities and are, furthermore, cost efficiently available, so that it can cost efficiently be produced in an easy way and in large quantities. The use of expensive and rarely found primary materials is no longer required.
- the material according to the present invention can be manufactured by using a method which is described below, and which leads - compared with semiconductor materials of the state of the art - to a more homogeneous structure of the semiconductor material.
- the metal Me l is a metal, which is selected from the metals in group 1 1 of the periodic table of the elements (Cu, Ag or Au).
- the metals in group 1 1 of the periodic table of the elements Cu, Ag or Au.
- Me2 and Me3 are selected from the elements of the 12th group of the periodic table of the elements (Zn, Cd and Hg).
- the nonmetals C l and C2 are selected from the group of chalcogenides (S, Se and Te).
- a metal from the 4th main group of the periodic table of the elements (C, Si, Ge, Sn and Pb), in particular Sn, is selected as metal Me4.
- the metal Me l is selected from the group consisting of the metals of group 1 1 of the periodic table of the elements (Cu, Ag and Au);
- the metals Me l and Me2 are selected from the group consisting of the elements of the 12th group of the periodic table of the elements (Zn, Cd and Hg);
- the nonmetals C l and C2 are selected from the group consisting of the chalcogonides (S, Se and Te);
- the metal Me4 is selected from the 4th main group of the periodic table of the elements (C, Si, Ge, Sn and Pb), where in particular Sn is selected.
- the semiconductor material according to the present invention has the general formula (Ia)
- the semiconductor material according to the present invention has the general formula (Ib)
- y stands for a numeric value from 0 to 1 , and where the numeric values of 0.3 to 0.7 are particularly preferred.
- the semiconductor material according to the present invention is crystalline and is preferably present in form of monocrystals, i.e., in a single crystalline form.
- the semiconductor according to the present invention preferably has a tetragonal or (spseudo) cubic structure.
- An X-ray analysis of the semiconductor material according to the present invention moreover shows, that a stannite and/or kesterite structures are present.
- the semiconductor material according to the present invention can be obtained from the method described below, which at least partially takes place in a melt.
- a corresponding manufacturing method is described in WO 99/67449 A, the entire disclosure of which with respect to the subject of this invention is included in the present invention by referencing.
- a semiconductor material gained from a melt is moreover preferred.
- the advantage associated with this method is generally based on the improved homogeneity of the resulting semiconductor material.
- the present invention furthermore concerns a semiconductor material gained in accordance with a method, in which (1 ) CuSe(S), ZnSe(S), CdSe(S) and SnSe(S) precursor compounds are mixed with each other in a first process step of this method ;
- the mixture obtained from process step (3) is heated in an enclosed unit to a temperature of preferably 400 to 900 °C, preferably of 450 to 850 °C, with a range of 500 to 800 °C being particularly preferred in this case.
- Me l , Me2, Me3 and Me4 are selected from the group of metals including the group of transition metals, C l and C2 are nonmetals, and where x in the general formula (I) stands for a numeric value of 0 to 1 and y for a numeric value of 0 to 1 , is preferably obtained.
- the stoichiometric ratio of the corresponding precursor compounds in process step ( 1 ) is preferably selected in such a way, that the desired target compound according to general formula (I) is obtained.
- the stoichiometric ratio of the corresponding precursor compounds in the mix is selected in such a way, that a penternary (consisting of 5 components) or hexanary (consisting of 6 components) material according to the general formula
- the semiconductor material is preferably obtained according to the method described above, whereby the growth in the melt is performed in a medium of, for instance, potassium iodide or sodium chloride in process step (4).
- the semiconductor material is preferably obtained from the method described above, whereas the milling of the mixture in process step (2) can be performed by using a planetary mill.
- the semiconductor material is preferably obtained as a monocrystalline powder with particle diameters of between 1 ⁇ m and 3 mm, with diameters of between 10 ⁇ m and 100 ⁇ m are being particularly preferred. In this form it is particularly well suited for use in monograin membranes.
- the semiconductor material is preferably obtained according to the method described above, in which the material can be heated in process step (4) for a period of between 10 sec and 100 h, preferably of between 10 min and 1 O h, and where a period of between 10 min and 2 h is particularly preferred.
- the semiconductor material is preferably obtained according to the method described above, in which the semiconductor material is manufactured in the presence of an inert gas.
- a noble gas can preferably be used as the inert gas.
- argon gas is used as the inert gas.
- the semiconductor material according to the present invention and obtained in the described way is preferably present in form of a monocrystalline structure.
- a further claim of the present invention concerns a solar cell comprising a semiconductor material according to the present invention as the absorber material.
- the present invention concerns a solar cell with an irradiation side, which is designated for the irradiation of light to be transformed into electric power, and with a rear side located opposite to the irradiation side, as well as including a semiconductor layer, in which this semiconductor layer is provided with a p-n coating (p-n junction) as the boundary layer, and is arranged between two electrodes, which can be provided with contacts and are separated by an electric insulator.
- p-n coating p-n junction
- the solar cell according to the present invention preferably includes a monograin layer having a semiconductor material of the general formula (I)
- the solar cell mentioned above in particular includes a monograin layer consisting of
- the semiconductor material according to the present invention preferably is present with a coating of CdS in this monograin layer.
- the semiconductor material according to the present invention can in form of this monograin layer be used in a solar cell according to the present invention in combination with a TCO as conductive front contact.
- the TCO can be of organic or inorganic nature, and for instance be made from PEDOT/PSS, nano tubes, ITO and Al-doped ZnO).
- the rear contact of the solar cell according to the present invention preferably has good conductivity and can for example consist of graphite, molybdenum, gold, silver, copper and/or aluminium.
- the monograin layer under the scope of the solar cell according to the present invention has a filling factor of preferably 40 to 90 %, with 45 to 85% being preferred, and 55 to 80 % being particularly preferred, whereas high filling factors are beneficial since they allow to achieve a higher performance at the operating point.
- the barrier voltage required for a p-n junction of the mono layer in general amounts to between 0.3 and 2 eV, with 0.5 to 1 .5 eV being preferred, and 0.7 to 1 .4 eV being particularly preferred.
- the solar cell according to the present invention has an open circuit voltage of preferably 0.2 to 1.8 V, with 0.5 to 1 .6 V being the preferred, and 0.7 to 1 .3 V being the particularly preferred range.
- the solar cell according to the present invention is preferably obtainable according to a process method in which an absorber material having the structure
- ( 1 ) is coated with a thin film of CdS in a first process step
- a transparent conductor preferably with a well conductive and transparent oxide (TCO), exemplary with ITO or an Al-doped ZnO in a fourth process step;
- TCO well conductive and transparent oxide
- the thin film generation in process step (1) is preferably performed in such a way that the powder material is briefly immersed in a solution of colloidal CdS or sprayed with this solution.
- the corresponding solar cells have an efficiency factor of preferably 3 to 29%, with 5 to 29% being preferred and 10 to 29% being particularly preferred values.
- efficiency factor we understand the ratio of the electric power output in relation to the irradiated power under so- called standard conditions (25 °C, 1000 W/m 2 of light power and an AM 1.5 light spectrum).
Abstract
Cette invention porte sur un matériau semi-conducteur de la formule générale (I) Me12Me21-xMe3xMe4(C11-yC2y)4 (I), dans laquelle x représente une valeur numérique allant de 0 à 1 et y représente une valeur numérique allant de 0 à 1, ainsi que son utilisation comme matériau absorbant dans une cellule solaire.
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US13/054,200 US8907210B2 (en) | 2008-07-15 | 2009-07-15 | Semiconductor material and its application as an absorber material for solar cells |
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US8083608P | 2008-07-15 | 2008-07-15 | |
DE202008009492U DE202008009492U1 (de) | 2008-07-15 | 2008-07-15 | Halbleitermaterial und dessen Verwendung als Absorptionsmaterial für Solarzellen |
US61/080,836 | 2008-07-15 | ||
DE202008009492.5 | 2008-07-15 |
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US20120061790A1 (en) * | 2010-09-09 | 2012-03-15 | International Business Machines Corporation | Structure and Method of Fabricating a CZTS Photovoltaic Device by Electrodeposition |
US20120145970A1 (en) * | 2010-12-09 | 2012-06-14 | E.I. Du Pont De Nemours And Company | Quaternary chalcogenide wafers |
US8414862B2 (en) | 2009-11-25 | 2013-04-09 | E I Du Pont De Nemours And Company | Preparation of CZTS and its analogs in ionic liquids |
US8470287B2 (en) | 2009-11-25 | 2013-06-25 | E I Du Pont De Nemours And Company | Preparation of copper zinc tin sulfide |
US8480944B2 (en) | 2010-12-09 | 2013-07-09 | E I Du Pont De Nemours And Company | Quaternary chalcogenide wafers |
US20140048137A1 (en) * | 2010-11-22 | 2014-02-20 | E I Du Pont De Nemours And Company | Process for preparing coated substrates and photovoltaic devices |
WO2014168963A1 (fr) * | 2013-04-08 | 2014-10-16 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State | Matériaux semi-conducteur |
RU2718124C1 (ru) * | 2019-06-10 | 2020-03-30 | Федеральное государственное бюджетное учреждение науки Институт проблем химической физики Российской Академии наук (ФГБУН ИПХФ РАН) | Способ получения монозеренных кестеритных порошков из тройных халькогенидов меди и олова и соединений цинка |
US11286528B2 (en) * | 2012-01-12 | 2022-03-29 | Bioverativ Therapeutics Inc. | Methods of reducing immunogenicity against factor VIII in individuals undergoing factor VIII therapy |
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US10446704B2 (en) * | 2015-12-30 | 2019-10-15 | International Business Machines Corporation | Formation of Ohmic back contact for Ag2ZnSn(S,Se)4 photovoltaic devices |
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US8414862B2 (en) | 2009-11-25 | 2013-04-09 | E I Du Pont De Nemours And Company | Preparation of CZTS and its analogs in ionic liquids |
US8470287B2 (en) | 2009-11-25 | 2013-06-25 | E I Du Pont De Nemours And Company | Preparation of copper zinc tin sulfide |
US20120061790A1 (en) * | 2010-09-09 | 2012-03-15 | International Business Machines Corporation | Structure and Method of Fabricating a CZTS Photovoltaic Device by Electrodeposition |
US9041141B2 (en) | 2010-09-09 | 2015-05-26 | International Business Machines Corporation | Structure and method of fabricating a CZTS photovoltaic device by electrodeposition |
US8426241B2 (en) * | 2010-09-09 | 2013-04-23 | International Business Machines Corporation | Structure and method of fabricating a CZTS photovoltaic device by electrodeposition |
US8790956B2 (en) | 2010-09-09 | 2014-07-29 | International Business Machines Corporation | Structure and method of fabricating a CZTS photovoltaic device by electrodeposition |
US20140048137A1 (en) * | 2010-11-22 | 2014-02-20 | E I Du Pont De Nemours And Company | Process for preparing coated substrates and photovoltaic devices |
US8709657B2 (en) | 2010-12-09 | 2014-04-29 | E I Du Pont De Nemours And Company | Quaternary chalcogenide wafers |
US8480944B2 (en) | 2010-12-09 | 2013-07-09 | E I Du Pont De Nemours And Company | Quaternary chalcogenide wafers |
US20120145970A1 (en) * | 2010-12-09 | 2012-06-14 | E.I. Du Pont De Nemours And Company | Quaternary chalcogenide wafers |
US11286528B2 (en) * | 2012-01-12 | 2022-03-29 | Bioverativ Therapeutics Inc. | Methods of reducing immunogenicity against factor VIII in individuals undergoing factor VIII therapy |
WO2014168963A1 (fr) * | 2013-04-08 | 2014-10-16 | State Of Oregon Acting By And Through The State Board Of Higher Education On Behalf Of Oregon State | Matériaux semi-conducteur |
RU2718124C1 (ru) * | 2019-06-10 | 2020-03-30 | Федеральное государственное бюджетное учреждение науки Институт проблем химической физики Российской Академии наук (ФГБУН ИПХФ РАН) | Способ получения монозеренных кестеритных порошков из тройных халькогенидов меди и олова и соединений цинка |
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WO2010006623A3 (fr) | 2010-03-25 |
US8907210B2 (en) | 2014-12-09 |
DE202008009492U1 (de) | 2009-11-26 |
US20120138136A1 (en) | 2012-06-07 |
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